// This is an open source non-commercial project. Dear PVS-Studio, please check // it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com // drawline.c: Functions for drawing window lines on the screen. // This is the middle level, drawscreen.c is the top and grid.c/screen.c the lower level. #include #include #include #include #include #include #include "nvim/arabic.h" #include "nvim/ascii.h" #include "nvim/buffer.h" #include "nvim/charset.h" #include "nvim/cursor.h" #include "nvim/cursor_shape.h" #include "nvim/decoration.h" #include "nvim/decoration_provider.h" #include "nvim/diff.h" #include "nvim/drawline.h" #include "nvim/eval.h" #include "nvim/extmark_defs.h" #include "nvim/fold.h" #include "nvim/garray.h" #include "nvim/globals.h" #include "nvim/grid.h" #include "nvim/highlight.h" #include "nvim/highlight_group.h" #include "nvim/indent.h" #include "nvim/mark.h" #include "nvim/match.h" #include "nvim/mbyte.h" #include "nvim/memline.h" #include "nvim/memory.h" #include "nvim/move.h" #include "nvim/option.h" #include "nvim/plines.h" #include "nvim/pos.h" #include "nvim/quickfix.h" #include "nvim/screen.h" #include "nvim/sign.h" #include "nvim/spell.h" #include "nvim/state.h" #include "nvim/statusline.h" #include "nvim/strings.h" #include "nvim/syntax.h" #include "nvim/terminal.h" #include "nvim/types.h" #include "nvim/ui.h" #include "nvim/vim.h" #define MB_FILLER_CHAR '<' // character used when a double-width character // doesn't fit. /// possible draw states in win_line(), drawn in sequence. typedef enum { WL_START = 0, // nothing done yet WL_CMDLINE, // cmdline window column WL_FOLD, // 'foldcolumn' WL_SIGN, // column for signs WL_NR, // line number WL_STC, // 'statuscolumn' WL_BRI, // 'breakindent' WL_SBR, // 'showbreak' or 'diff' WL_LINE, // text in the line } LineDrawState; /// for line_putchar. Contains the state that needs to be remembered from /// putting one character to the next. typedef struct { const char *p; int prev_c; ///< previous Arabic character int prev_c1; ///< first composing char for prev_c } LineState; #define LINE_STATE(p) { p, 0, 0 } #ifdef INCLUDE_GENERATED_DECLARATIONS # include "drawline.c.generated.h" #endif /// Advance **color_cols /// /// @return true when there are columns to draw. static bool advance_color_col(int vcol, int **color_cols) { while (**color_cols >= 0 && vcol > **color_cols) { (*color_cols)++; } return **color_cols >= 0; } /// Used when 'cursorlineopt' contains "screenline": compute the margins between /// which the highlighting is used. static void margin_columns_win(win_T *wp, int *left_col, int *right_col) { // cache previous calculations depending on w_virtcol static int saved_w_virtcol; static win_T *prev_wp; static int prev_left_col; static int prev_right_col; static int prev_col_off; int cur_col_off = win_col_off(wp); int width1; int width2; if (saved_w_virtcol == wp->w_virtcol && prev_wp == wp && prev_col_off == cur_col_off) { *right_col = prev_right_col; *left_col = prev_left_col; return; } width1 = wp->w_width - cur_col_off; width2 = width1 + win_col_off2(wp); *left_col = 0; *right_col = width1; if (wp->w_virtcol >= (colnr_T)width1) { *right_col = width1 + ((wp->w_virtcol - width1) / width2 + 1) * width2; } if (wp->w_virtcol >= (colnr_T)width1 && width2 > 0) { *left_col = (wp->w_virtcol - width1) / width2 * width2 + width1; } // cache values prev_left_col = *left_col; prev_right_col = *right_col; prev_wp = wp; saved_w_virtcol = wp->w_virtcol; prev_col_off = cur_col_off; } /// Put a single char from an UTF-8 buffer into a line buffer. /// /// Handles composing chars and arabic shaping state. static int line_putchar(buf_T *buf, LineState *s, schar_T *dest, int maxcells, bool rl, int vcol) { const char *p = s->p; int cells = utf_ptr2cells(p); int c_len = utfc_ptr2len(p); int u8c, u8cc[MAX_MCO]; if (cells > maxcells) { return -1; } u8c = utfc_ptr2char(p, u8cc); if (*p == TAB) { cells = MIN(tabstop_padding(vcol, buf->b_p_ts, buf->b_p_vts_array), maxcells); for (int c = 0; c < cells; c++) { schar_from_ascii(dest[c], ' '); } goto done; } else if ((uint8_t)(*p) < 0x80 && u8cc[0] == 0) { schar_from_ascii(dest[0], *p); s->prev_c = u8c; } else { if (p_arshape && !p_tbidi && ARABIC_CHAR(u8c)) { // Do Arabic shaping. int pc, pc1, nc; int pcc[MAX_MCO]; int firstbyte = (uint8_t)(*p); // The idea of what is the previous and next // character depends on 'rightleft'. if (rl) { pc = s->prev_c; pc1 = s->prev_c1; nc = utf_ptr2char(p + c_len); s->prev_c1 = u8cc[0]; } else { pc = utfc_ptr2char(p + c_len, pcc); nc = s->prev_c; pc1 = pcc[0]; } s->prev_c = u8c; u8c = arabic_shape(u8c, &firstbyte, &u8cc[0], pc, pc1, nc); } else { s->prev_c = u8c; } schar_from_cc(dest[0], u8c, u8cc); } if (cells > 1) { dest[1][0] = 0; } done: s->p += c_len; return cells; } static inline void provider_err_virt_text(linenr_T lnum, char *err) { Decoration err_decor = DECORATION_INIT; int hl_err = syn_check_group(S_LEN("ErrorMsg")); kv_push(err_decor.virt_text, ((VirtTextChunk){ .text = err, .hl_id = hl_err })); err_decor.virt_text_width = (int)mb_string2cells(err); decor_add_ephemeral(lnum - 1, 0, lnum - 1, 0, &err_decor, 0, 0); } static void draw_virt_text(win_T *wp, buf_T *buf, int col_off, int *end_col, int max_col, int win_row) { DecorState *state = &decor_state; int right_pos = max_col; bool do_eol = state->eol_col > -1; for (size_t i = 0; i < kv_size(state->active); i++) { DecorRange *item = &kv_A(state->active, i); if (!(item->start_row == state->row && (kv_size(item->decor.virt_text) || item->decor.ui_watched))) { continue; } if (item->win_col == -1) { if (item->decor.virt_text_pos == kVTRightAlign) { right_pos -= item->decor.virt_text_width; item->win_col = right_pos; } else if (item->decor.virt_text_pos == kVTEndOfLine && do_eol) { item->win_col = state->eol_col; } else if (item->decor.virt_text_pos == kVTWinCol) { item->win_col = MAX(item->decor.col + col_off, 0); } } if (item->win_col < 0) { continue; } int col; if (item->decor.ui_watched) { // send mark position to UI col = item->win_col; WinExtmark m = { (NS)item->ns_id, item->mark_id, win_row, col }; kv_push(win_extmark_arr, m); } if (kv_size(item->decor.virt_text)) { col = draw_virt_text_item(buf, item->win_col, item->decor.virt_text, item->decor.hl_mode, max_col, item->win_col - col_off); } item->win_col = -2; // deactivate if (item->decor.virt_text_pos == kVTEndOfLine && do_eol) { state->eol_col = col + 1; } *end_col = MAX(*end_col, col); } } static int draw_virt_text_item(buf_T *buf, int col, VirtText vt, HlMode hl_mode, int max_col, int vcol) { LineState s = LINE_STATE(""); int virt_attr = 0; size_t virt_pos = 0; while (col < max_col) { if (!*s.p) { if (virt_pos >= kv_size(vt)) { break; } virt_attr = 0; do { s.p = kv_A(vt, virt_pos).text; int hl_id = kv_A(vt, virt_pos).hl_id; virt_attr = hl_combine_attr(virt_attr, hl_id > 0 ? syn_id2attr(hl_id) : 0); virt_pos++; } while (!s.p && virt_pos < kv_size(vt)); if (!s.p) { break; } } if (!*s.p) { continue; } int attr; bool through = false; if (hl_mode == kHlModeCombine) { attr = hl_combine_attr(linebuf_attr[col], virt_attr); } else if (hl_mode == kHlModeBlend) { through = (*s.p == ' '); attr = hl_blend_attrs(linebuf_attr[col], virt_attr, &through); } else { attr = virt_attr; } schar_T dummy[2]; int cells = line_putchar(buf, &s, through ? dummy : &linebuf_char[col], max_col - col, false, vcol); // if we failed to emit a char, we still need to advance cells = MAX(cells, 1); for (int c = 0; c < cells; c++) { linebuf_attr[col++] = attr; } vcol += cells; } return col; } /// Return true if CursorLineSign highlight is to be used. static bool use_cursor_line_sign(win_T *wp, linenr_T lnum) { return wp->w_p_cul && lnum == wp->w_cursor.lnum && (wp->w_p_culopt_flags & CULOPT_NBR); } // Get information needed to display the sign in line 'lnum' in window 'wp'. // If 'nrcol' is true, the sign is going to be displayed in the number column. // Otherwise the sign is going to be displayed in the sign column. // // @param count max number of signs // @param[out] n_extrap number of characters from pp_extra to display // @param sign_idxp Index of the displayed sign static void get_sign_display_info(bool nrcol, win_T *wp, linenr_T lnum, SignTextAttrs sattrs[], int row, int startrow, int filler_lines, int filler_todo, int *c_extrap, int *c_finalp, char *extra, size_t extra_size, char **pp_extra, int *n_extrap, int *char_attrp, int sign_idx, int cul_attr) { // Draw cells with the sign value or blank. *c_extrap = ' '; *c_finalp = NUL; if (nrcol) { *n_extrap = number_width(wp) + 1; } else { if (use_cursor_line_sign(wp, lnum)) { *char_attrp = win_hl_attr(wp, HLF_CLS); } else { *char_attrp = win_hl_attr(wp, HLF_SC); } *n_extrap = win_signcol_width(wp); } if (row == startrow + filler_lines && filler_todo <= 0) { SignTextAttrs *sattr = sign_get_attr(sign_idx, sattrs, wp->w_scwidth); if (sattr != NULL) { *pp_extra = sattr->text; if (*pp_extra != NULL) { *c_extrap = NUL; *c_finalp = NUL; if (nrcol) { int n, width = number_width(wp) - 2; for (n = 0; n < width; n++) { extra[n] = ' '; } extra[n] = NUL; STRCAT(extra, *pp_extra); STRCAT(extra, " "); *pp_extra = extra; *n_extrap = (int)strlen(*pp_extra); } else { size_t symbol_blen = strlen(*pp_extra); // TODO(oni-link): Is sign text already extended to // full cell width? assert((size_t)win_signcol_width(wp) >= mb_string2cells((char *)(*pp_extra))); // symbol(s) bytes + (filling spaces) (one byte each) *n_extrap = (int)symbol_blen + win_signcol_width(wp) - (int)mb_string2cells(*pp_extra); assert(extra_size > symbol_blen); memset(extra, ' ', extra_size); memcpy(extra, *pp_extra, symbol_blen); *pp_extra = extra; (*pp_extra)[*n_extrap] = NUL; } } if (use_cursor_line_sign(wp, lnum) && cul_attr > 0) { *char_attrp = cul_attr; } else { *char_attrp = sattr->hl_attr_id; } } } } static int get_sign_attrs(buf_T *buf, linenr_T lnum, SignTextAttrs *sattrs, int *line_attr, int *num_attr, int *cul_attr) { HlPriAttr line_attrs = { *line_attr, 0 }; HlPriAttr num_attrs = { *num_attr, 0 }; HlPriAttr cul_attrs = { *cul_attr, 0 }; // TODO(bfredl, vigoux): line_attr should not take priority over decoration! int num_signs = buf_get_signattrs(buf, lnum, sattrs, &num_attrs, &line_attrs, &cul_attrs); decor_redraw_signs(buf, lnum - 1, &num_signs, sattrs, &num_attrs, &line_attrs, &cul_attrs); *line_attr = line_attrs.attr_id; *num_attr = num_attrs.attr_id; *cul_attr = cul_attrs.attr_id; return num_signs; } /// Prepare and build the 'statuscolumn' string for line "lnum" in window "wp". /// Fill "stcp" with the built status column string and attributes. /// This can be called three times per win_line(), once for virt_lines, once for /// the start of the buffer line "lnum" and once for the wrapped lines. /// /// @param[out] stcp Status column attributes static void get_statuscol_str(win_T *wp, linenr_T lnum, int row, int startrow, int filler_lines, int cul_attr, int sign_num_attr, int sign_cul_attr, statuscol_T *stcp, foldinfo_T foldinfo, SignTextAttrs *sattrs) { long relnum = -1; bool use_cul = use_cursor_line_sign(wp, lnum); int virtnum = row - startrow - filler_lines; set_vim_var_nr(VV_VIRTNUM, virtnum); // When called the first time for line "lnum" set num_attr if (stcp->num_attr == 0) { stcp->num_attr = sign_num_attr ? sign_num_attr : get_line_number_attr(wp, lnum, row, startrow, filler_lines); } // When called for the first non-filler row of line "lnum" set num v:vars and fold column if (virtnum == 0) { relnum = labs(get_cursor_rel_lnum(wp, lnum)); if (compute_foldcolumn(wp, 0)) { size_t n = fill_foldcolumn(stcp->fold_text, wp, foldinfo, lnum); stcp->fold_text[n] = NUL; stcp->fold_attr = win_hl_attr(wp, use_cul ? HLF_CLF : HLF_FC); } } // Make sure to clear->set->clear sign column for filler->first->wrapped lines int i = 0; for (; i < wp->w_scwidth; i++) { SignTextAttrs *sattr = virtnum ? NULL : sign_get_attr(i, sattrs, wp->w_scwidth); stcp->sign_text[i] = sattr && sattr->text ? sattr->text : " "; stcp->sign_attr[i] = sattr ? (use_cul && sign_cul_attr ? sign_cul_attr : sattr->hl_attr_id) : win_hl_attr(wp, use_cul ? HLF_CLS : HLF_SC); } stcp->sign_text[i] = NULL; int width = build_statuscol_str(wp, lnum, relnum, stcp->width, ' ', stcp->text, &stcp->hlrec, stcp); // Force a redraw in case of error or when truncated if (*wp->w_p_stc == NUL || (stcp->truncate > 0 && wp->w_nrwidth < MAX_NUMBERWIDTH)) { if (stcp->truncate) { // Avoid truncating 'statuscolumn' wp->w_nrwidth = MIN(MAX_NUMBERWIDTH, wp->w_nrwidth + stcp->truncate); wp->w_nrwidth_width = wp->w_nrwidth; } else { // 'statuscolumn' reset due to error wp->w_nrwidth_line_count = 0; wp->w_nrwidth = (wp->w_p_nu || wp->w_p_rnu) * number_width(wp); } wp->w_redr_statuscol = true; return; } // Reset text/highlight pointer and current attr for new line stcp->textp = stcp->text; stcp->hlrecp = stcp->hlrec; stcp->cur_attr = stcp->num_attr; stcp->text_end = stcp->text + strlen(stcp->text); int fill = stcp->width - width; if (fill > 0) { // Fill up with ' ' memset(stcp->text_end, ' ', (size_t)fill); *(stcp->text_end += fill) = NUL; } } /// Get information needed to display the next segment in the 'statuscolumn'. /// If not yet at the end, prepare for next segment and decrement "draw_state". /// /// @param stcp Status column attributes /// @param[out] draw_state Current draw state in win_line() static void get_statuscol_display_info(statuscol_T *stcp, LineDrawState *draw_state, int *char_attr, int *n_extrap, int *c_extrap, int *c_finalp, char **pp_extra) { *c_extrap = NUL; *c_finalp = NUL; do { *draw_state = WL_STC; *char_attr = stcp->cur_attr; *pp_extra = stcp->textp; *n_extrap = (int)((stcp->hlrecp->start ? stcp->hlrecp->start : stcp->text_end) - stcp->textp); // Prepare for next highlight section if not yet at the end if (stcp->textp + *n_extrap < stcp->text_end) { int hl = stcp->hlrecp->userhl; stcp->textp = stcp->hlrecp->start; stcp->cur_attr = hl < 0 ? syn_id2attr(-stcp->hlrecp->userhl) : hl > 0 ? hl : stcp->num_attr; stcp->hlrecp++; *draw_state = WL_STC - 1; } // Skip over empty highlight sections } while (*n_extrap == 0 && stcp->textp < stcp->text_end); } /// Return true if CursorLineNr highlight is to be used for the number column. /// /// - 'cursorline' must be set /// - lnum must be the cursor line /// - 'cursorlineopt' has "number" /// - don't highlight filler lines (when in diff mode) /// - When line is wrapped and 'cursorlineopt' does not have "line", only highlight the line number /// itself on the first screenline of the wrapped line, otherwise highlight the number column of /// all screenlines of the wrapped line. static bool use_cursor_line_nr(win_T *wp, linenr_T lnum, int row, int startrow, int filler_lines) { return wp->w_p_cul && lnum == wp->w_cursor.lnum && (wp->w_p_culopt_flags & CULOPT_NBR) && (row == startrow + filler_lines || (row > startrow + filler_lines && (wp->w_p_culopt_flags & CULOPT_LINE))); } static inline void get_line_number_str(win_T *wp, linenr_T lnum, char *buf, size_t buf_len) { long num; char *fmt = "%*ld "; if (wp->w_p_nu && !wp->w_p_rnu) { // 'number' + 'norelativenumber' num = (long)lnum; } else { // 'relativenumber', don't use negative numbers num = labs((long)get_cursor_rel_lnum(wp, lnum)); if (num == 0 && wp->w_p_nu && wp->w_p_rnu) { // 'number' + 'relativenumber' num = lnum; fmt = "%-*ld "; } } snprintf(buf, buf_len, fmt, number_width(wp), num); } static int get_line_number_attr(win_T *wp, linenr_T lnum, int row, int startrow, int filler_lines) { if (wp->w_p_rnu) { if (lnum < wp->w_cursor.lnum) { // Use LineNrAbove return win_hl_attr(wp, HLF_LNA); } if (lnum > wp->w_cursor.lnum) { // Use LineNrBelow return win_hl_attr(wp, HLF_LNB); } } if (use_cursor_line_nr(wp, lnum, row, startrow, filler_lines)) { // TODO(vim): Can we use CursorLine instead of CursorLineNr // when CursorLineNr isn't set? return win_hl_attr(wp, HLF_CLN); } return win_hl_attr(wp, HLF_N); } static void apply_cursorline_highlight(win_T *wp, linenr_T lnum, int *line_attr, int *cul_attr, int *line_attr_lowprio) { *cul_attr = win_hl_attr(wp, HLF_CUL); HlAttrs ae = syn_attr2entry(*cul_attr); // We make a compromise here (#7383): // * low-priority CursorLine if fg is not set // * high-priority ("same as Vim" priority) CursorLine if fg is set if (ae.rgb_fg_color == -1 && ae.cterm_fg_color == 0) { *line_attr_lowprio = *cul_attr; } else { if (!(State & MODE_INSERT) && bt_quickfix(wp->w_buffer) && qf_current_entry(wp) == lnum) { *line_attr = hl_combine_attr(*cul_attr, *line_attr); } else { *line_attr = *cul_attr; } } } static bool check_mb_utf8(int *c, int *u8cc) { if (utf_char2len(*c) > 1) { *u8cc = 0; *c = 0xc0; return true; } return false; } /// Display line "lnum" of window 'wp' on the screen. /// wp->w_virtcol needs to be valid. /// /// @param lnum line to display /// @param startrow first row relative to window grid /// @param endrow last grid row to be redrawn /// @param nochange not updating for changed text /// @param number_only only update the number column /// @param foldinfo fold info for this line /// @param[in, out] providers decoration providers active this line /// items will be disables if they cause errors /// or explicitly return `false`. /// /// @return the number of last row the line occupies. int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow, bool nochange, bool number_only, foldinfo_T foldinfo, DecorProviders *providers, char **provider_err) { int c = 0; // init for GCC long vcol = 0; // virtual column (for tabs) long vcol_sbr = -1; // virtual column after showbreak long vcol_prev = -1; // "vcol" of previous character char *line; // current line char *ptr; // current position in "line" int row; // row in the window, excl w_winrow ScreenGrid *grid = &wp->w_grid; // grid specific to the window char extra[57]; // sign, line number and 'fdc' must // fit in here int n_extra = 0; // number of extra chars char *p_extra = NULL; // string of extra chars, plus NUL char *p_extra_free = NULL; // p_extra needs to be freed int c_extra = NUL; // extra chars, all the same int c_final = NUL; // final char, mandatory if set int extra_attr = 0; // attributes when n_extra != 0 static char *at_end_str = ""; // used for p_extra when displaying curwin->w_p_lcs_chars.eol // at end-of-line int lcs_eol_one = wp->w_p_lcs_chars.eol; // 'eol' until it's been used int lcs_prec_todo = wp->w_p_lcs_chars.prec; // 'prec' until it's been used bool has_fold = foldinfo.fi_level != 0 && foldinfo.fi_lines > 0; // saved "extra" items for when draw_state becomes WL_LINE (again) int saved_n_extra = 0; char *saved_p_extra = NULL; int saved_c_extra = 0; int saved_c_final = 0; int saved_char_attr = 0; int n_attr = 0; // chars with special attr int saved_attr2 = 0; // char_attr saved for n_attr int n_attr3 = 0; // chars with overruling special attr int saved_attr3 = 0; // char_attr saved for n_attr3 int n_skip = 0; // nr of chars to skip for 'nowrap' int fromcol = -10; // start of inverting int tocol = MAXCOL; // end of inverting int fromcol_prev = -2; // start of inverting after cursor bool noinvcur = false; // don't invert the cursor bool lnum_in_visual_area = false; pos_T pos; long v; int char_attr = 0; // attributes for next character bool attr_pri = false; // char_attr has priority bool area_highlighting = false; // Visual or incsearch highlighting in this line int vi_attr = 0; // attributes for Visual and incsearch highlighting int area_attr = 0; // attributes desired by highlighting int search_attr = 0; // attributes desired by 'hlsearch' int vcol_save_attr = 0; // saved attr for 'cursorcolumn' int syntax_attr = 0; // attributes desired by syntax bool has_syntax = false; // this buffer has syntax highl. int save_did_emsg; int eol_hl_off = 0; // 1 if highlighted char after EOL bool draw_color_col = false; // highlight colorcolumn int *color_cols = NULL; // pointer to according columns array bool has_spell = false; // this buffer has spell checking #define SPWORDLEN 150 char nextline[SPWORDLEN * 2]; // text with start of the next line int nextlinecol = 0; // column where nextline[] starts int nextline_idx = 0; // index in nextline[] where next line // starts int spell_attr = 0; // attributes desired by spelling int word_end = 0; // last byte with same spell_attr static linenr_T checked_lnum = 0; // line number for "checked_col" static int checked_col = 0; // column in "checked_lnum" up to which // there are no spell errors static int cap_col = -1; // column to check for Cap word static linenr_T capcol_lnum = 0; // line number where "cap_col" int cur_checked_col = 0; // checked column for current line int extra_check = 0; // has syntax or linebreak int multi_attr = 0; // attributes desired by multibyte int mb_l = 1; // multi-byte byte length int mb_c = 0; // decoded multi-byte character bool mb_utf8 = false; // screen char is UTF-8 char int u8cc[MAX_MCO]; // composing UTF-8 chars int filler_lines; // nr of filler lines to be drawn int filler_todo; // nr of filler lines still to do + 1 hlf_T diff_hlf = (hlf_T)0; // type of diff highlighting int change_start = MAXCOL; // first col of changed area int change_end = -1; // last col of changed area colnr_T trailcol = MAXCOL; // start of trailing spaces colnr_T leadcol = 0; // start of leading spaces bool in_multispace = false; // in multiple consecutive spaces int multispace_pos = 0; // position in lcs-multispace string bool need_showbreak = false; // overlong line, skip first x chars int line_attr = 0; // attribute for the whole line int line_attr_save; int line_attr_lowprio = 0; // low-priority attribute for the line int line_attr_lowprio_save; int prev_c = 0; // previous Arabic character int prev_c1 = 0; // first composing char for prev_c bool search_attr_from_match = false; // if search_attr is from :match bool has_decor = false; // this buffer has decoration int win_col_offset = 0; // offset for window columns char buf_fold[FOLD_TEXT_LEN]; // Hold value returned by get_foldtext bool area_active = false; int cul_attr = 0; // set when 'cursorline' active // 'cursorlineopt' has "screenline" and cursor is in this line bool cul_screenline = false; // margin columns for the screen line, needed for when 'cursorlineopt' // contains "screenline" int left_curline_col = 0; int right_curline_col = 0; LineDrawState draw_state = WL_START; // what to draw next int match_conc = 0; ///< cchar for match functions bool on_last_col = false; int syntax_flags = 0; int syntax_seqnr = 0; int prev_syntax_id = 0; int conceal_attr = win_hl_attr(wp, HLF_CONCEAL); bool is_concealing = false; int boguscols = 0; ///< nonexistent columns added to ///< force wrapping int vcol_off = 0; ///< offset for concealed characters int did_wcol = false; int old_boguscols = 0; #define VCOL_HLC (vcol - vcol_off) #define FIX_FOR_BOGUSCOLS \ { \ n_extra += vcol_off; \ vcol -= vcol_off; \ vcol_off = 0; \ col -= boguscols; \ old_boguscols = boguscols; \ boguscols = 0; \ } if (startrow > endrow) { // past the end already! return startrow; } row = startrow; buf_T *buf = wp->w_buffer; bool end_fill = (lnum == buf->b_ml.ml_line_count + 1); if (!number_only) { // To speed up the loop below, set extra_check when there is linebreak, // trailing white space and/or syntax processing to be done. extra_check = wp->w_p_lbr; if (syntax_present(wp) && !wp->w_s->b_syn_error && !wp->w_s->b_syn_slow && !has_fold && !end_fill) { // Prepare for syntax highlighting in this line. When there is an // error, stop syntax highlighting. save_did_emsg = did_emsg; did_emsg = false; syntax_start(wp, lnum); if (did_emsg) { wp->w_s->b_syn_error = true; } else { did_emsg = save_did_emsg; if (!wp->w_s->b_syn_slow) { has_syntax = true; extra_check = true; } } } has_decor = decor_redraw_line(buf, lnum - 1, &decor_state); decor_providers_invoke_line(wp, providers, lnum - 1, &has_decor, provider_err); if (*provider_err) { provider_err_virt_text(lnum, *provider_err); has_decor = true; *provider_err = NULL; } if (has_decor) { extra_check = true; } // Check for columns to display for 'colorcolumn'. color_cols = wp->w_buffer->terminal ? NULL : wp->w_p_cc_cols; if (color_cols != NULL) { draw_color_col = advance_color_col((int)VCOL_HLC, &color_cols); } if (wp->w_p_spell && !has_fold && !end_fill && *wp->w_s->b_p_spl != NUL && !GA_EMPTY(&wp->w_s->b_langp) && *(char **)(wp->w_s->b_langp.ga_data) != NULL) { // Prepare for spell checking. has_spell = true; extra_check = true; // Get the start of the next line, so that words that wrap to the next // line are found too: "etal.". // Trick: skip a few chars for C/shell/Vim comments nextline[SPWORDLEN] = NUL; if (lnum < wp->w_buffer->b_ml.ml_line_count) { line = ml_get_buf(wp->w_buffer, lnum + 1, false); spell_cat_line(nextline + SPWORDLEN, line, SPWORDLEN); } // When a word wrapped from the previous line the start of the current // line is valid. if (lnum == checked_lnum) { cur_checked_col = checked_col; } checked_lnum = 0; // When there was a sentence end in the previous line may require a // word starting with capital in this line. In line 1 always check // the first word. if (lnum != capcol_lnum) { cap_col = -1; } if (lnum == 1) { cap_col = 0; } capcol_lnum = 0; } // handle Visual active in this window if (VIsual_active && wp->w_buffer == curwin->w_buffer) { pos_T *top, *bot; if (ltoreq(curwin->w_cursor, VIsual)) { // Visual is after curwin->w_cursor top = &curwin->w_cursor; bot = &VIsual; } else { // Visual is before curwin->w_cursor top = &VIsual; bot = &curwin->w_cursor; } lnum_in_visual_area = (lnum >= top->lnum && lnum <= bot->lnum); if (VIsual_mode == Ctrl_V) { // block mode if (lnum_in_visual_area) { fromcol = wp->w_old_cursor_fcol; tocol = wp->w_old_cursor_lcol; } } else { // non-block mode if (lnum > top->lnum && lnum <= bot->lnum) { fromcol = 0; } else if (lnum == top->lnum) { if (VIsual_mode == 'V') { // linewise fromcol = 0; } else { getvvcol(wp, top, (colnr_T *)&fromcol, NULL, NULL); if (gchar_pos(top) == NUL) { tocol = fromcol + 1; } } } if (VIsual_mode != 'V' && lnum == bot->lnum) { if (*p_sel == 'e' && bot->col == 0 && bot->coladd == 0) { fromcol = -10; tocol = MAXCOL; } else if (bot->col == MAXCOL) { tocol = MAXCOL; } else { pos = *bot; if (*p_sel == 'e') { getvvcol(wp, &pos, (colnr_T *)&tocol, NULL, NULL); } else { getvvcol(wp, &pos, NULL, NULL, (colnr_T *)&tocol); tocol++; } } } } // Check if the char under the cursor should be inverted (highlighted). if (!highlight_match && lnum == curwin->w_cursor.lnum && wp == curwin && cursor_is_block_during_visual(*p_sel == 'e')) { noinvcur = true; } // if inverting in this line set area_highlighting if (fromcol >= 0) { area_highlighting = true; vi_attr = win_hl_attr(wp, HLF_V); } // handle 'incsearch' and ":s///c" highlighting } else if (highlight_match && wp == curwin && !has_fold && lnum >= curwin->w_cursor.lnum && lnum <= curwin->w_cursor.lnum + search_match_lines) { if (lnum == curwin->w_cursor.lnum) { getvcol(curwin, &(curwin->w_cursor), (colnr_T *)&fromcol, NULL, NULL); } else { fromcol = 0; } if (lnum == curwin->w_cursor.lnum + search_match_lines) { pos.lnum = lnum; pos.col = search_match_endcol; getvcol(curwin, &pos, (colnr_T *)&tocol, NULL, NULL); } // do at least one character; happens when past end of line if (fromcol == tocol && search_match_endcol) { tocol = fromcol + 1; } area_highlighting = true; vi_attr = win_hl_attr(wp, HLF_I); } } int bg_attr = win_bg_attr(wp); int linestatus = 0; filler_lines = diff_check_with_linestatus(wp, lnum, &linestatus); if (filler_lines < 0 || linestatus < 0) { if (filler_lines == -1 || linestatus == -1) { if (diff_find_change(wp, lnum, &change_start, &change_end)) { diff_hlf = HLF_ADD; // added line } else if (change_start == 0) { diff_hlf = HLF_TXD; // changed text } else { diff_hlf = HLF_CHD; // changed line } } else { diff_hlf = HLF_ADD; // added line } if (linestatus == 0) { filler_lines = 0; } area_highlighting = true; } VirtLines virt_lines = KV_INITIAL_VALUE; int n_virt_lines = decor_virt_lines(wp, lnum, &virt_lines, has_fold); filler_lines += n_virt_lines; if (lnum == wp->w_topline) { filler_lines = wp->w_topfill; n_virt_lines = MIN(n_virt_lines, filler_lines); } filler_todo = filler_lines; // Cursor line highlighting for 'cursorline' in the current window. if (lnum == wp->w_cursor.lnum) { // Do not show the cursor line in the text when Visual mode is active, // because it's not clear what is selected then. if (wp->w_p_cul && !(wp == curwin && VIsual_active) && wp->w_p_culopt_flags != CULOPT_NBR) { cul_screenline = (wp->w_p_wrap && (wp->w_p_culopt_flags & CULOPT_SCRLINE)); if (!cul_screenline) { apply_cursorline_highlight(wp, lnum, &line_attr, &cul_attr, &line_attr_lowprio); } else { margin_columns_win(wp, &left_curline_col, &right_curline_col); } area_highlighting = true; } } SignTextAttrs sattrs[SIGN_SHOW_MAX]; // sign attributes for the sign column int sign_num_attr = 0; // sign attribute for the number column int sign_cul_attr = 0; // sign attribute for cursorline CLEAR_FIELD(sattrs); int num_signs = get_sign_attrs(buf, lnum, sattrs, &line_attr, &sign_num_attr, &sign_cul_attr); // Highlight the current line in the quickfix window. if (bt_quickfix(wp->w_buffer) && qf_current_entry(wp) == lnum) { line_attr = win_hl_attr(wp, HLF_QFL); } if (line_attr_lowprio || line_attr) { area_highlighting = true; } if (cul_screenline) { line_attr_save = line_attr; line_attr_lowprio_save = line_attr_lowprio; } line = end_fill ? "" : ml_get_buf(wp->w_buffer, lnum, false); ptr = line; if (has_spell && !number_only) { // For checking first word with a capital skip white space. if (cap_col == 0) { cap_col = (int)getwhitecols(line); } // To be able to spell-check over line boundaries copy the end of the // current line into nextline[]. Above the start of the next line was // copied to nextline[SPWORDLEN]. if (nextline[SPWORDLEN] == NUL) { // No next line or it is empty. nextlinecol = MAXCOL; nextline_idx = 0; } else { v = (long)strlen(line); if (v < SPWORDLEN) { // Short line, use it completely and append the start of the // next line. nextlinecol = 0; memmove(nextline, line, (size_t)v); STRMOVE(nextline + v, nextline + SPWORDLEN); nextline_idx = (int)v + 1; } else { // Long line, use only the last SPWORDLEN bytes. nextlinecol = (int)v - SPWORDLEN; memmove(nextline, line + nextlinecol, SPWORDLEN); // -V1086 nextline_idx = SPWORDLEN + 1; } } } if (wp->w_p_list && !has_fold && !end_fill) { if (wp->w_p_lcs_chars.space || wp->w_p_lcs_chars.multispace != NULL || wp->w_p_lcs_chars.leadmultispace != NULL || wp->w_p_lcs_chars.trail || wp->w_p_lcs_chars.lead || wp->w_p_lcs_chars.nbsp) { extra_check = true; } // find start of trailing whitespace if (wp->w_p_lcs_chars.trail) { trailcol = (colnr_T)strlen(ptr); while (trailcol > (colnr_T)0 && ascii_iswhite(ptr[trailcol - 1])) { trailcol--; } trailcol += (colnr_T)(ptr - line); } // find end of leading whitespace if (wp->w_p_lcs_chars.lead || wp->w_p_lcs_chars.leadmultispace != NULL) { leadcol = 0; while (ascii_iswhite(ptr[leadcol])) { leadcol++; } if (ptr[leadcol] == NUL) { // in a line full of spaces all of them are treated as trailing leadcol = (colnr_T)0; } else { // keep track of the first column not filled with spaces leadcol += (colnr_T)(ptr - line) + 1; } } } // 'nowrap' or 'wrap' and a single line that doesn't fit: Advance to the // first character to be displayed. if (wp->w_p_wrap) { v = wp->w_skipcol; } else { v = wp->w_leftcol; } if (v > 0 && !number_only) { char *prev_ptr = ptr; chartabsize_T cts; int charsize; init_chartabsize_arg(&cts, wp, lnum, (colnr_T)vcol, line, ptr); while (cts.cts_vcol < v && *cts.cts_ptr != NUL) { charsize = win_lbr_chartabsize(&cts, NULL); cts.cts_vcol += charsize; prev_ptr = cts.cts_ptr; MB_PTR_ADV(cts.cts_ptr); } vcol = cts.cts_vcol; ptr = cts.cts_ptr; clear_chartabsize_arg(&cts); // When: // - 'cuc' is set, or // - 'colorcolumn' is set, or // - 'virtualedit' is set, or // - the visual mode is active, // the end of the line may be before the start of the displayed part. if (vcol < v && (wp->w_p_cuc || draw_color_col || virtual_active() || (VIsual_active && wp->w_buffer == curwin->w_buffer))) { vcol = v; } // Handle a character that's not completely on the screen: Put ptr at // that character but skip the first few screen characters. if (vcol > v) { vcol -= charsize; ptr = prev_ptr; // If the character fits on the screen, don't need to skip it. // Except for a TAB. if (utf_ptr2cells(ptr) >= charsize || *ptr == TAB) { n_skip = (int)(v - vcol); } } // Adjust for when the inverted text is before the screen, // and when the start of the inverted text is before the screen. if (tocol <= vcol) { fromcol = 0; } else if (fromcol >= 0 && fromcol < vcol) { fromcol = (int)vcol; } // When w_skipcol is non-zero, first line needs 'showbreak' if (wp->w_p_wrap) { need_showbreak = true; } // When spell checking a word we need to figure out the start of the // word and if it's badly spelled or not. if (has_spell) { size_t len; colnr_T linecol = (colnr_T)(ptr - line); hlf_T spell_hlf = HLF_COUNT; pos = wp->w_cursor; wp->w_cursor.lnum = lnum; wp->w_cursor.col = linecol; len = spell_move_to(wp, FORWARD, true, true, &spell_hlf); // spell_move_to() may call ml_get() and make "line" invalid line = ml_get_buf(wp->w_buffer, lnum, false); ptr = line + linecol; if (len == 0 || (int)wp->w_cursor.col > ptr - line) { // no bad word found at line start, don't check until end of a // word spell_hlf = HLF_COUNT; word_end = (int)(spell_to_word_end(ptr, wp) - line + 1); } else { // bad word found, use attributes until end of word assert(len <= INT_MAX); word_end = wp->w_cursor.col + (int)len + 1; // Turn index into actual attributes. if (spell_hlf != HLF_COUNT) { spell_attr = highlight_attr[spell_hlf]; } } wp->w_cursor = pos; // Need to restart syntax highlighting for this line. if (has_syntax) { syntax_start(wp, lnum); } } } // Correct highlighting for cursor that can't be disabled. // Avoids having to check this for each character. if (fromcol >= 0) { if (noinvcur) { if ((colnr_T)fromcol == wp->w_virtcol) { // highlighting starts at cursor, let it start just after the // cursor fromcol_prev = fromcol; fromcol = -1; } else if ((colnr_T)fromcol < wp->w_virtcol) { // restart highlighting after the cursor fromcol_prev = wp->w_virtcol; } } if (fromcol >= tocol) { fromcol = -1; } } if (!number_only && !has_fold && !end_fill) { v = ptr - line; area_highlighting |= prepare_search_hl_line(wp, lnum, (colnr_T)v, &line, &screen_search_hl, &search_attr, &search_attr_from_match); ptr = line + v; // "line" may have been updated } int off = 0; // Offset relative start of line int col = 0; // Visual column on screen. if (wp->w_p_rl) { // Rightleft window: process the text in the normal direction, but put // it in linebuf_char[off] from right to left. Start at the // rightmost column of the window. col = grid->cols - 1; off += col; } // won't highlight after TERM_ATTRS_MAX columns int term_attrs[TERM_ATTRS_MAX] = { 0 }; if (wp->w_buffer->terminal) { terminal_get_line_attributes(wp->w_buffer->terminal, wp, lnum, term_attrs); extra_check = true; } statuscol_T statuscol = { 0 }; if (*wp->w_p_stc != NUL) { // Draw the 'statuscolumn' if option is set. statuscol.draw = true; statuscol.width = win_col_off(wp); } int sign_idx = 0; int virt_line_index; int virt_line_offset = -1; // Repeat for the whole displayed line. for (;;) { int has_match_conc = 0; ///< match wants to conceal int decor_conceal = 0; bool did_decrement_ptr = false; // Skip this quickly when working on the text. if (draw_state != WL_LINE) { if (cul_screenline) { cul_attr = 0; line_attr = line_attr_save; line_attr_lowprio = line_attr_lowprio_save; } if (draw_state == WL_CMDLINE - 1 && n_extra == 0) { draw_state = WL_CMDLINE; if (cmdwin_type != 0 && wp == curwin) { // Draw the cmdline character. n_extra = 1; c_extra = cmdwin_type; c_final = NUL; char_attr = win_hl_attr(wp, HLF_AT); } } if (draw_state == WL_FOLD - 1 && n_extra == 0) { if (filler_todo > 0) { int index = filler_todo - (filler_lines - n_virt_lines); if (index > 0) { virt_line_index = (int)kv_size(virt_lines) - index; assert(virt_line_index >= 0); virt_line_offset = kv_A(virt_lines, virt_line_index).left_col ? 0 : win_col_off(wp); } } if (!virt_line_offset) { // Skip the column states if there is a "virt_left_col" line. draw_state = WL_BRI - 1; } else if (statuscol.draw) { // Skip fold, sign and number states if 'statuscolumn' is set. draw_state = WL_STC - 1; } } if (draw_state == WL_FOLD - 1 && n_extra == 0) { int fdc = compute_foldcolumn(wp, 0); draw_state = WL_FOLD; if (fdc > 0) { // Draw the 'foldcolumn'. Allocate a buffer, "extra" may // already be in use. xfree(p_extra_free); p_extra_free = xmalloc(MAX_MCO * (size_t)fdc + 1); n_extra = (int)fill_foldcolumn(p_extra_free, wp, foldinfo, lnum); p_extra_free[n_extra] = NUL; p_extra = p_extra_free; c_extra = NUL; c_final = NUL; if (use_cursor_line_sign(wp, lnum)) { char_attr = win_hl_attr(wp, HLF_CLF); } else { char_attr = win_hl_attr(wp, HLF_FC); } } } // sign column, this is hit until sign_idx reaches count if (draw_state == WL_SIGN - 1 && n_extra == 0) { draw_state = WL_SIGN; // Show the sign column when there are any signs in this buffer if (wp->w_scwidth > 0) { get_sign_display_info(false, wp, lnum, sattrs, row, startrow, filler_lines, filler_todo, &c_extra, &c_final, extra, sizeof(extra), &p_extra, &n_extra, &char_attr, sign_idx, sign_cul_attr); sign_idx++; if (sign_idx < wp->w_scwidth) { draw_state = WL_SIGN - 1; } else { sign_idx = 0; } } } if (draw_state == WL_NR - 1 && n_extra == 0) { draw_state = WL_NR; // Display the absolute or relative line number. After the // first fill with blanks when the 'n' flag isn't in 'cpo' if ((wp->w_p_nu || wp->w_p_rnu) && (row == startrow + filler_lines || vim_strchr(p_cpo, CPO_NUMCOL) == NULL)) { // If 'signcolumn' is set to 'number' and a sign is present // in 'lnum', then display the sign instead of the line // number. if (*wp->w_p_scl == 'n' && *(wp->w_p_scl + 1) == 'u' && num_signs > 0) { get_sign_display_info(true, wp, lnum, sattrs, row, startrow, filler_lines, filler_todo, &c_extra, &c_final, extra, sizeof(extra), &p_extra, &n_extra, &char_attr, sign_idx, sign_cul_attr); } else { // Draw the line number (empty space after wrapping). if (row == startrow + filler_lines) { get_line_number_str(wp, lnum, extra, sizeof(extra)); if (wp->w_skipcol > 0) { for (p_extra = extra; *p_extra == ' '; p_extra++) { *p_extra = '-'; } } if (wp->w_p_rl) { // reverse line numbers // like rl_mirror(), but keep the space at the end char *p2 = skipwhite(extra); p2 = skiptowhite(p2) - 1; for (char *p1 = skipwhite(extra); p1 < p2; p1++, p2--) { const char t = *p1; *p1 = *p2; *p2 = t; } } p_extra = extra; c_extra = NUL; } else { c_extra = ' '; } c_final = NUL; n_extra = number_width(wp) + 1; if (sign_num_attr > 0) { char_attr = sign_num_attr; } else { char_attr = get_line_number_attr(wp, lnum, row, startrow, filler_lines); } } } } if (draw_state == WL_STC - 1 && n_extra == 0) { draw_state = WL_STC; // Draw the 'statuscolumn' if option is set. if (statuscol.draw) { if (statuscol.textp == NULL) { get_statuscol_str(wp, lnum, row, startrow, filler_lines, cul_attr, sign_num_attr, sign_cul_attr, &statuscol, foldinfo, sattrs); if (wp->w_redr_statuscol) { break; } } get_statuscol_display_info(&statuscol, &draw_state, &char_attr, &n_extra, &c_extra, &c_final, &p_extra); } } if (draw_state == WL_STC && n_extra == 0) { win_col_offset = off; } if (wp->w_briopt_sbr && draw_state == WL_BRI - 1 && n_extra == 0 && *get_showbreak_value(wp) != NUL) { // draw indent after showbreak value draw_state = WL_BRI; } else if (wp->w_briopt_sbr && draw_state == WL_SBR && n_extra == 0) { // after the showbreak, draw the breakindent draw_state = WL_BRI - 1; } // draw 'breakindent': indent wrapped text accordingly if (draw_state == WL_BRI - 1 && n_extra == 0) { draw_state = WL_BRI; // if need_showbreak is set, breakindent also applies if (wp->w_p_bri && (row != startrow || need_showbreak) && filler_lines == 0) { char_attr = 0; if (diff_hlf != (hlf_T)0) { char_attr = win_hl_attr(wp, (int)diff_hlf); } p_extra = NULL; c_extra = ' '; c_final = NUL; n_extra = get_breakindent_win(wp, ml_get_buf(wp->w_buffer, lnum, false)); if (row == startrow) { n_extra -= win_col_off2(wp); if (n_extra < 0) { n_extra = 0; } } if (wp->w_skipcol > 0 && wp->w_p_wrap && wp->w_briopt_sbr) { need_showbreak = false; } // Correct end of highlighted area for 'breakindent', // required wen 'linebreak' is also set. if (tocol == vcol) { tocol += n_extra; } } } if (draw_state == WL_SBR - 1 && n_extra == 0) { draw_state = WL_SBR; if (filler_todo > filler_lines - n_virt_lines) { // TODO(bfredl): check this doesn't inhibit TUI-style // clear-to-end-of-line. c_extra = ' '; c_final = NUL; if (wp->w_p_rl) { n_extra = col + 1; } else { n_extra = grid->cols - col; } char_attr = 0; } else if (filler_todo > 0) { // Draw "deleted" diff line(s) if (char2cells(wp->w_p_fcs_chars.diff) > 1) { c_extra = '-'; c_final = NUL; } else { c_extra = wp->w_p_fcs_chars.diff; c_final = NUL; } if (wp->w_p_rl) { n_extra = col + 1; } else { n_extra = grid->cols - col; } char_attr = win_hl_attr(wp, HLF_DED); } char *const sbr = get_showbreak_value(wp); if (*sbr != NUL && need_showbreak) { // Draw 'showbreak' at the start of each broken line. p_extra = sbr; c_extra = NUL; c_final = NUL; n_extra = (int)strlen(sbr); char_attr = win_hl_attr(wp, HLF_AT); if (wp->w_skipcol == 0 || !wp->w_p_wrap) { need_showbreak = false; } vcol_sbr = vcol + mb_charlen(sbr); // Correct end of highlighted area for 'showbreak', // required when 'linebreak' is also set. if (tocol == vcol) { tocol += n_extra; } // Combine 'showbreak' with 'cursorline', prioritizing 'showbreak'. if (cul_attr) { char_attr = hl_combine_attr(cul_attr, char_attr); } } } if (draw_state == WL_LINE - 1 && n_extra == 0) { sign_idx = 0; draw_state = WL_LINE; if (has_decor && row == startrow + filler_lines) { // hide virt_text on text hidden by 'nowrap' decor_redraw_col(wp->w_buffer, (int)vcol, off, true, &decor_state); } if (saved_n_extra) { // Continue item from end of wrapped line. n_extra = saved_n_extra; c_extra = saved_c_extra; c_final = saved_c_final; p_extra = saved_p_extra; char_attr = saved_char_attr; } else { char_attr = 0; } } } if (cul_screenline && draw_state == WL_LINE && vcol >= left_curline_col && vcol < right_curline_col) { apply_cursorline_highlight(wp, lnum, &line_attr, &cul_attr, &line_attr_lowprio); } // When still displaying '$' of change command, stop at cursor if (((dollar_vcol >= 0 && wp == curwin && lnum == wp->w_cursor.lnum && vcol >= (long)wp->w_virtcol) || (number_only && draw_state > WL_STC)) && filler_todo <= 0) { draw_virt_text(wp, buf, win_col_offset, &col, grid->cols, row); grid_put_linebuf(grid, row, 0, col, -grid->cols, wp->w_p_rl, wp, bg_attr, false); // Pretend we have finished updating the window. Except when // 'cursorcolumn' is set. if (wp->w_p_cuc) { row = wp->w_cline_row + wp->w_cline_height; } else { row = grid->rows; } break; } if (draw_state == WL_LINE && has_fold && col == win_col_offset && n_extra == 0 && row == startrow + filler_lines) { char_attr = win_hl_attr(wp, HLF_FL); linenr_T lnume = lnum + foldinfo.fi_lines - 1; memset(buf_fold, ' ', FOLD_TEXT_LEN); p_extra = get_foldtext(wp, lnum, lnume, foldinfo, buf_fold); n_extra = (int)strlen(p_extra); if (p_extra != buf_fold) { xfree(p_extra_free); p_extra_free = p_extra; } c_extra = NUL; c_final = NUL; p_extra[n_extra] = NUL; } if (draw_state == WL_LINE && has_fold && col < grid->cols && n_extra == 0 && row == startrow + filler_lines) { // fill rest of line with 'fold' c_extra = wp->w_p_fcs_chars.fold; c_final = NUL; n_extra = wp->w_p_rl ? (col + 1) : (grid->cols - col); } if (draw_state == WL_LINE && has_fold && col >= grid->cols && n_extra != 0 && row == startrow + filler_lines) { // Truncate the folding. n_extra = 0; } if (draw_state == WL_LINE && (area_highlighting || has_spell)) { // handle Visual or match highlighting in this line if (vcol == fromcol || (vcol + 1 == fromcol && n_extra == 0 && utf_ptr2cells(ptr) > 1) || ((int)vcol_prev == fromcol_prev && vcol_prev < vcol // not at margin && vcol < tocol)) { area_attr = vi_attr; // start highlighting if (area_highlighting) { area_active = true; } } else if (area_attr != 0 && (vcol == tocol || (noinvcur && (colnr_T)vcol == wp->w_virtcol))) { area_attr = 0; // stop highlighting area_active = false; } if (!n_extra) { // Check for start/end of 'hlsearch' and other matches. // After end, check for start/end of next match. // When another match, have to check for start again. v = (ptr - line); search_attr = update_search_hl(wp, lnum, (colnr_T)v, &line, &screen_search_hl, &has_match_conc, &match_conc, lcs_eol_one, &on_last_col, &search_attr_from_match); ptr = line + v; // "line" may have been changed // Do not allow a conceal over EOL otherwise EOL will be missed // and bad things happen. if (*ptr == NUL) { has_match_conc = 0; } } if (diff_hlf != (hlf_T)0) { if (diff_hlf == HLF_CHD && ptr - line >= change_start && n_extra == 0) { diff_hlf = HLF_TXD; // changed text } if (diff_hlf == HLF_TXD && ptr - line > change_end && n_extra == 0) { diff_hlf = HLF_CHD; // changed line } line_attr = win_hl_attr(wp, (int)diff_hlf); // Overlay CursorLine onto diff-mode highlight. if (cul_attr) { line_attr = 0 != line_attr_lowprio // Low-priority CursorLine ? hl_combine_attr(hl_combine_attr(cul_attr, line_attr), hl_get_underline()) : hl_combine_attr(line_attr, cul_attr); } } // Decide which of the highlight attributes to use. attr_pri = true; if (area_attr != 0) { char_attr = hl_combine_attr(line_attr, area_attr); if (!highlight_match) { // let search highlight show in Visual area if possible char_attr = hl_combine_attr(search_attr, char_attr); } } else if (search_attr != 0) { char_attr = hl_combine_attr(line_attr, search_attr); } else if (line_attr != 0 && ((fromcol == -10 && tocol == MAXCOL) || vcol < fromcol || vcol_prev < fromcol_prev || vcol >= tocol)) { // Use line_attr when not in the Visual or 'incsearch' area // (area_attr may be 0 when "noinvcur" is set). char_attr = line_attr; } else { attr_pri = false; if (has_syntax) { char_attr = syntax_attr; } else { char_attr = 0; } } } // Get the next character to put on the screen. // // The "p_extra" points to the extra stuff that is inserted to // represent special characters (non-printable stuff) and other // things. When all characters are the same, c_extra is used. // If c_final is set, it will compulsorily be used at the end. // "p_extra" must end in a NUL to avoid utfc_ptr2len() reads past // "p_extra[n_extra]". // For the '$' of the 'list' option, n_extra == 1, p_extra == "". if (n_extra > 0) { if (c_extra != NUL || (n_extra == 1 && c_final != NUL)) { c = (n_extra == 1 && c_final != NUL) ? c_final : c_extra; mb_c = c; // doesn't handle non-utf-8 multi-byte! mb_utf8 = check_mb_utf8(&c, u8cc); } else { assert(p_extra != NULL); c = (uint8_t)(*p_extra); mb_c = c; // If the UTF-8 character is more than one byte: // Decode it into "mb_c". mb_l = utfc_ptr2len(p_extra); mb_utf8 = false; if (mb_l > n_extra) { mb_l = 1; } else if (mb_l > 1) { mb_c = utfc_ptr2char(p_extra, u8cc); mb_utf8 = true; c = 0xc0; } if (mb_l == 0) { // at the NUL at end-of-line mb_l = 1; } // If a double-width char doesn't fit display a '>' in the last column. if ((wp->w_p_rl ? (col <= 0) : (col >= grid->cols - 1)) && utf_char2cells(mb_c) == 2) { c = '>'; mb_c = c; mb_l = 1; (void)mb_l; multi_attr = win_hl_attr(wp, HLF_AT); if (cul_attr) { multi_attr = 0 != line_attr_lowprio ? hl_combine_attr(cul_attr, multi_attr) : hl_combine_attr(multi_attr, cul_attr); } // put the pointer back to output the double-width // character at the start of the next line. n_extra++; p_extra--; } else { n_extra -= mb_l - 1; p_extra += mb_l - 1; } p_extra++; } n_extra--; } else if (foldinfo.fi_lines > 0) { // skip writing the buffer line itself c = NUL; XFREE_CLEAR(p_extra_free); } else { int c0; XFREE_CLEAR(p_extra_free); // Get a character from the line itself. c0 = c = (uint8_t)(*ptr); mb_c = c; // If the UTF-8 character is more than one byte: Decode it // into "mb_c". mb_l = utfc_ptr2len(ptr); mb_utf8 = false; if (mb_l > 1) { mb_c = utfc_ptr2char(ptr, u8cc); // Overlong encoded ASCII or ASCII with composing char // is displayed normally, except a NUL. if (mb_c < 0x80) { c0 = c = mb_c; } mb_utf8 = true; // At start of the line we can have a composing char. // Draw it as a space with a composing char. if (utf_iscomposing(mb_c)) { int i; for (i = MAX_MCO - 1; i > 0; i--) { u8cc[i] = u8cc[i - 1]; } u8cc[0] = mb_c; mb_c = ' '; } } if ((mb_l == 1 && c >= 0x80) || (mb_l >= 1 && mb_c == 0) || (mb_l > 1 && (!vim_isprintc(mb_c)))) { // Illegal UTF-8 byte: display as . // Non-BMP character : display as ? or fullwidth ?. transchar_hex(extra, mb_c); if (wp->w_p_rl) { // reverse rl_mirror(extra); } p_extra = extra; c = (uint8_t)(*p_extra); mb_c = mb_ptr2char_adv((const char **)&p_extra); mb_utf8 = (c >= 0x80); n_extra = (int)strlen(p_extra); c_extra = NUL; c_final = NUL; if (area_attr == 0 && search_attr == 0) { n_attr = n_extra + 1; extra_attr = win_hl_attr(wp, HLF_8); saved_attr2 = char_attr; // save current attr } } else if (mb_l == 0) { // at the NUL at end-of-line mb_l = 1; } else if (p_arshape && !p_tbidi && ARABIC_CHAR(mb_c)) { // Do Arabic shaping. int pc, pc1, nc; int pcc[MAX_MCO]; // The idea of what is the previous and next // character depends on 'rightleft'. if (wp->w_p_rl) { pc = prev_c; pc1 = prev_c1; nc = utf_ptr2char(ptr + mb_l); prev_c1 = u8cc[0]; } else { pc = utfc_ptr2char(ptr + mb_l, pcc); nc = prev_c; pc1 = pcc[0]; } prev_c = mb_c; mb_c = arabic_shape(mb_c, &c, &u8cc[0], pc, pc1, nc); } else { prev_c = mb_c; } // If a double-width char doesn't fit display a '>' in the // last column; the character is displayed at the start of the // next line. if ((wp->w_p_rl ? (col <= 0) : (col >= grid->cols - 1)) && utf_char2cells(mb_c) == 2) { c = '>'; mb_c = c; mb_utf8 = false; mb_l = 1; multi_attr = win_hl_attr(wp, HLF_AT); // Put pointer back so that the character will be // displayed at the start of the next line. ptr--; did_decrement_ptr = true; } else if (*ptr != NUL) { ptr += mb_l - 1; } // If a double-width char doesn't fit at the left side display a '<' in // the first column. Don't do this for unprintable characters. if (n_skip > 0 && mb_l > 1 && n_extra == 0) { n_extra = 1; c_extra = MB_FILLER_CHAR; c_final = NUL; c = ' '; if (area_attr == 0 && search_attr == 0) { n_attr = n_extra + 1; extra_attr = win_hl_attr(wp, HLF_AT); saved_attr2 = char_attr; // save current attr } mb_c = c; mb_utf8 = false; mb_l = 1; } ptr++; if (extra_check) { bool no_plain_buffer = (wp->w_s->b_p_spo_flags & SPO_NPBUFFER) != 0; bool can_spell = !no_plain_buffer; // Get syntax attribute, unless still at the start of the line // (double-wide char that doesn't fit). v = (ptr - line); if (has_syntax && v > 0) { // Get the syntax attribute for the character. If there // is an error, disable syntax highlighting. save_did_emsg = did_emsg; did_emsg = false; syntax_attr = get_syntax_attr((colnr_T)v - 1, has_spell ? &can_spell : NULL, false); if (did_emsg) { // -V547 wp->w_s->b_syn_error = true; has_syntax = false; } else { did_emsg = save_did_emsg; } if (wp->w_s->b_syn_slow) { has_syntax = false; } // Need to get the line again, a multi-line regexp may // have made it invalid. line = ml_get_buf(wp->w_buffer, lnum, false); ptr = line + v; if (!attr_pri) { if (cul_attr) { char_attr = 0 != line_attr_lowprio ? hl_combine_attr(cul_attr, syntax_attr) : hl_combine_attr(syntax_attr, cul_attr); } else { char_attr = syntax_attr; } } else { char_attr = hl_combine_attr(syntax_attr, char_attr); } // no concealing past the end of the line, it interferes // with line highlighting. if (c == NUL) { syntax_flags = 0; } else { syntax_flags = get_syntax_info(&syntax_seqnr); } } else if (!attr_pri) { char_attr = 0; } if (has_decor && v > 0) { bool selected = (area_active || (area_highlighting && noinvcur && (colnr_T)vcol == wp->w_virtcol)); int extmark_attr = decor_redraw_col(wp->w_buffer, (colnr_T)v - 1, off, selected, &decor_state); if (extmark_attr != 0) { if (!attr_pri) { char_attr = hl_combine_attr(char_attr, extmark_attr); } else { char_attr = hl_combine_attr(extmark_attr, char_attr); } } decor_conceal = decor_state.conceal; if (decor_conceal && decor_state.conceal_char) { decor_conceal = 2; // really?? } can_spell = TRISTATE_TO_BOOL(decor_state.spell, can_spell); } // Check spelling (unless at the end of the line). // Only do this when there is no syntax highlighting, the // @Spell cluster is not used or the current syntax item // contains the @Spell cluster. v = (ptr - line); if (has_spell && v >= word_end && v > cur_checked_col) { spell_attr = 0; if (!attr_pri) { char_attr = hl_combine_attr(char_attr, syntax_attr); } if (c != 0 && ((!has_syntax && !no_plain_buffer) || can_spell)) { char *prev_ptr; char *p; int len; hlf_T spell_hlf = HLF_COUNT; prev_ptr = ptr - mb_l; v -= mb_l - 1; // Use nextline[] if possible, it has the start of the // next line concatenated. if ((prev_ptr - line) - nextlinecol >= 0) { p = nextline + ((prev_ptr - line) - nextlinecol); } else { p = prev_ptr; } cap_col -= (int)(prev_ptr - line); size_t tmplen = spell_check(wp, p, &spell_hlf, &cap_col, nochange); assert(tmplen <= INT_MAX); len = (int)tmplen; word_end = (int)v + len; // In Insert mode only highlight a word that // doesn't touch the cursor. if (spell_hlf != HLF_COUNT && (State & MODE_INSERT) && wp->w_cursor.lnum == lnum && wp->w_cursor.col >= (colnr_T)(prev_ptr - line) && wp->w_cursor.col < (colnr_T)word_end) { spell_hlf = HLF_COUNT; spell_redraw_lnum = lnum; } if (spell_hlf == HLF_COUNT && p != prev_ptr && (p - nextline) + len > nextline_idx) { // Remember that the good word continues at the // start of the next line. checked_lnum = lnum + 1; checked_col = (int)((p - nextline) + len - nextline_idx); } // Turn index into actual attributes. if (spell_hlf != HLF_COUNT) { spell_attr = highlight_attr[spell_hlf]; } if (cap_col > 0) { if (p != prev_ptr && (p - nextline) + cap_col >= nextline_idx) { // Remember that the word in the next line // must start with a capital. capcol_lnum = lnum + 1; cap_col = (int)((p - nextline) + cap_col - nextline_idx); } else { // Compute the actual column. cap_col += (int)(prev_ptr - line); } } } } if (spell_attr != 0) { if (!attr_pri) { char_attr = hl_combine_attr(char_attr, spell_attr); } else { char_attr = hl_combine_attr(spell_attr, char_attr); } } if (wp->w_buffer->terminal) { char_attr = hl_combine_attr(term_attrs[vcol], char_attr); } // Found last space before word: check for line break. if (wp->w_p_lbr && c0 == c && vim_isbreak(c) && !vim_isbreak((int)(*ptr))) { int mb_off = utf_head_off(line, ptr - 1); char *p = ptr - (mb_off + 1); chartabsize_T cts; init_chartabsize_arg(&cts, wp, lnum, (colnr_T)vcol, line, p); n_extra = win_lbr_chartabsize(&cts, NULL) - 1; // We have just drawn the showbreak value, no need to add // space for it again. if (vcol == vcol_sbr) { n_extra -= mb_charlen(get_showbreak_value(wp)); if (n_extra < 0) { n_extra = 0; } } if (on_last_col && c != TAB) { // Do not continue search/match highlighting over the // line break, but for TABs the highlighting should // include the complete width of the character search_attr = 0; } if (c == TAB && n_extra + col > grid->cols) { n_extra = tabstop_padding((colnr_T)vcol, wp->w_buffer->b_p_ts, wp->w_buffer->b_p_vts_array) - 1; } c_extra = mb_off > 0 ? MB_FILLER_CHAR : ' '; c_final = NUL; if (ascii_iswhite(c)) { if (c == TAB) { // See "Tab alignment" below. FIX_FOR_BOGUSCOLS; } if (!wp->w_p_list) { c = ' '; } } clear_chartabsize_arg(&cts); } in_multispace = c == ' ' && ((ptr > line + 1 && ptr[-2] == ' ') || *ptr == ' '); if (!in_multispace) { multispace_pos = 0; } // 'list': Change char 160 to 'nbsp' and space to 'space'. // But not when the character is followed by a composing // character (use mb_l to check that). if (wp->w_p_list && ((((c == 160 && mb_l == 1) || (mb_utf8 && ((mb_c == 160 && mb_l == 2) || (mb_c == 0x202f && mb_l == 3)))) && wp->w_p_lcs_chars.nbsp) || (c == ' ' && mb_l == 1 && (wp->w_p_lcs_chars.space || (in_multispace && wp->w_p_lcs_chars.multispace != NULL)) && ptr - line >= leadcol && ptr - line <= trailcol))) { if (in_multispace && wp->w_p_lcs_chars.multispace != NULL) { c = wp->w_p_lcs_chars.multispace[multispace_pos++]; if (wp->w_p_lcs_chars.multispace[multispace_pos] == NUL) { multispace_pos = 0; } } else { c = (c == ' ') ? wp->w_p_lcs_chars.space : wp->w_p_lcs_chars.nbsp; } n_attr = 1; extra_attr = win_hl_attr(wp, HLF_0); saved_attr2 = char_attr; // save current attr mb_c = c; mb_utf8 = check_mb_utf8(&c, u8cc); } if (c == ' ' && ((trailcol != MAXCOL && ptr > line + trailcol) || (leadcol != 0 && ptr < line + leadcol))) { if (leadcol != 0 && in_multispace && ptr < line + leadcol && wp->w_p_lcs_chars.leadmultispace != NULL) { c = wp->w_p_lcs_chars.leadmultispace[multispace_pos++]; if (wp->w_p_lcs_chars.leadmultispace[multispace_pos] == NUL) { multispace_pos = 0; } } else if (ptr > line + trailcol && wp->w_p_lcs_chars.trail) { c = wp->w_p_lcs_chars.trail; } else if (ptr < line + leadcol && wp->w_p_lcs_chars.lead) { c = wp->w_p_lcs_chars.lead; } else if (leadcol != 0 && wp->w_p_lcs_chars.space) { c = wp->w_p_lcs_chars.space; } n_attr = 1; extra_attr = win_hl_attr(wp, HLF_0); saved_attr2 = char_attr; // save current attr mb_c = c; mb_utf8 = check_mb_utf8(&c, u8cc); } } // Handling of non-printable characters. if (!vim_isprintc(c)) { // when getting a character from the file, we may have to // turn it into something else on the way to putting it on the screen. if (c == TAB && (!wp->w_p_list || wp->w_p_lcs_chars.tab1)) { int tab_len = 0; long vcol_adjusted = vcol; // removed showbreak length char *const sbr = get_showbreak_value(wp); // Only adjust the tab_len, when at the first column after the // showbreak value was drawn. if (*sbr != NUL && vcol == vcol_sbr && wp->w_p_wrap) { vcol_adjusted = vcol - mb_charlen(sbr); } // tab amount depends on current column tab_len = tabstop_padding((colnr_T)vcol_adjusted, wp->w_buffer->b_p_ts, wp->w_buffer->b_p_vts_array) - 1; if (!wp->w_p_lbr || !wp->w_p_list) { n_extra = tab_len; } else { char *p; int i; int saved_nextra = n_extra; if (vcol_off > 0) { // there are characters to conceal tab_len += vcol_off; } // boguscols before FIX_FOR_BOGUSCOLS macro from above. if (wp->w_p_lcs_chars.tab1 && old_boguscols > 0 && n_extra > tab_len) { tab_len += n_extra - tab_len; } // If n_extra > 0, it gives the number of chars // to use for a tab, else we need to calculate the width // for a tab. int len = (tab_len * utf_char2len(wp->w_p_lcs_chars.tab2)); if (wp->w_p_lcs_chars.tab3) { len += utf_char2len(wp->w_p_lcs_chars.tab3); } if (n_extra > 0) { len += n_extra - tab_len; } c = wp->w_p_lcs_chars.tab1; p = xmalloc((size_t)len + 1); memset(p, ' ', (size_t)len); p[len] = NUL; xfree(p_extra_free); p_extra_free = p; for (i = 0; i < tab_len; i++) { if (*p == NUL) { tab_len = i; break; } int lcs = wp->w_p_lcs_chars.tab2; // if tab3 is given, use it for the last char if (wp->w_p_lcs_chars.tab3 && i == tab_len - 1) { lcs = wp->w_p_lcs_chars.tab3; } p += utf_char2bytes(lcs, p); n_extra += utf_char2len(lcs) - (saved_nextra > 0 ? 1 : 0); } p_extra = p_extra_free; // n_extra will be increased by FIX_FOX_BOGUSCOLS // macro below, so need to adjust for that here if (vcol_off > 0) { n_extra -= vcol_off; } } { int vc_saved = vcol_off; // Tab alignment should be identical regardless of // 'conceallevel' value. So tab compensates of all // previous concealed characters, and thus resets // vcol_off and boguscols accumulated so far in the // line. Note that the tab can be longer than // 'tabstop' when there are concealed characters. FIX_FOR_BOGUSCOLS; // Make sure, the highlighting for the tab char will be // correctly set further below (effectively reverts the // FIX_FOR_BOGSUCOLS macro). if (n_extra == tab_len + vc_saved && wp->w_p_list && wp->w_p_lcs_chars.tab1) { tab_len += vc_saved; } } mb_utf8 = false; // don't draw as UTF-8 if (wp->w_p_list) { c = (n_extra == 0 && wp->w_p_lcs_chars.tab3) ? wp->w_p_lcs_chars.tab3 : wp->w_p_lcs_chars.tab1; if (wp->w_p_lbr) { c_extra = NUL; // using p_extra from above } else { c_extra = wp->w_p_lcs_chars.tab2; } c_final = wp->w_p_lcs_chars.tab3; n_attr = tab_len + 1; extra_attr = win_hl_attr(wp, HLF_0); saved_attr2 = char_attr; // save current attr mb_c = c; mb_utf8 = check_mb_utf8(&c, u8cc); } else { c_final = NUL; c_extra = ' '; c = ' '; } } else if (c == NUL && (wp->w_p_list || ((fromcol >= 0 || fromcol_prev >= 0) && tocol > vcol && VIsual_mode != Ctrl_V && (wp->w_p_rl ? (col >= 0) : (col < grid->cols)) && !(noinvcur && lnum == wp->w_cursor.lnum && (colnr_T)vcol == wp->w_virtcol))) && lcs_eol_one > 0) { // Display a '$' after the line or highlight an extra // character if the line break is included. // For a diff line the highlighting continues after the "$". if (diff_hlf == (hlf_T)0 && line_attr == 0 && line_attr_lowprio == 0) { // In virtualedit, visual selections may extend beyond end of line if (area_highlighting && virtual_active() && tocol != MAXCOL && vcol < tocol) { n_extra = 0; } else { p_extra = at_end_str; n_extra = 1; c_extra = NUL; c_final = NUL; } } if (wp->w_p_list && wp->w_p_lcs_chars.eol > 0) { c = wp->w_p_lcs_chars.eol; } else { c = ' '; } lcs_eol_one = -1; ptr--; // put it back at the NUL extra_attr = win_hl_attr(wp, HLF_AT); n_attr = 1; mb_c = c; mb_utf8 = check_mb_utf8(&c, u8cc); } else if (c != NUL) { p_extra = (char *)transchar_buf(wp->w_buffer, c); if (n_extra == 0) { n_extra = byte2cells(c) - 1; } if ((dy_flags & DY_UHEX) && wp->w_p_rl) { rl_mirror(p_extra); // reverse "<12>" } c_extra = NUL; c_final = NUL; if (wp->w_p_lbr) { char *p; c = (uint8_t)(*p_extra); p = xmalloc((size_t)n_extra + 1); memset(p, ' ', (size_t)n_extra); strncpy(p, // NOLINT(runtime/printf) p_extra + 1, (size_t)strlen(p_extra) - 1); p[n_extra] = NUL; xfree(p_extra_free); p_extra_free = p_extra = p; } else { n_extra = byte2cells(c) - 1; c = (uint8_t)(*p_extra++); } n_attr = n_extra + 1; extra_attr = win_hl_attr(wp, HLF_8); saved_attr2 = char_attr; // save current attr mb_utf8 = false; // don't draw as UTF-8 } else if (VIsual_active && (VIsual_mode == Ctrl_V || VIsual_mode == 'v') && virtual_active() && tocol != MAXCOL && vcol < tocol && (wp->w_p_rl ? (col >= 0) : (col < grid->cols))) { c = ' '; ptr--; // put it back at the NUL } } if (wp->w_p_cole > 0 && (wp != curwin || lnum != wp->w_cursor.lnum || conceal_cursor_line(wp)) && ((syntax_flags & HL_CONCEAL) != 0 || has_match_conc > 0 || decor_conceal > 0) && !(lnum_in_visual_area && vim_strchr(wp->w_p_cocu, 'v') == NULL)) { char_attr = conceal_attr; if (((prev_syntax_id != syntax_seqnr && (syntax_flags & HL_CONCEAL) != 0) || has_match_conc > 1 || decor_conceal > 1) && (syn_get_sub_char() != NUL || (has_match_conc && match_conc) || (decor_conceal && decor_state.conceal_char) || wp->w_p_cole == 1) && wp->w_p_cole != 3) { // First time at this concealed item: display one // character. if (has_match_conc && match_conc) { c = match_conc; } else if (decor_conceal && decor_state.conceal_char) { c = decor_state.conceal_char; if (decor_state.conceal_attr) { char_attr = decor_state.conceal_attr; } } else if (syn_get_sub_char() != NUL) { c = syn_get_sub_char(); } else if (wp->w_p_lcs_chars.conceal != NUL) { c = wp->w_p_lcs_chars.conceal; } else { c = ' '; } prev_syntax_id = syntax_seqnr; if (n_extra > 0) { vcol_off += n_extra; } vcol += n_extra; if (wp->w_p_wrap && n_extra > 0) { if (wp->w_p_rl) { col -= n_extra; boguscols -= n_extra; } else { boguscols += n_extra; col += n_extra; } } n_extra = 0; n_attr = 0; } else if (n_skip == 0) { is_concealing = true; n_skip = 1; } mb_c = c; mb_utf8 = check_mb_utf8(&c, u8cc); } else { prev_syntax_id = 0; is_concealing = false; } if (n_skip > 0 && did_decrement_ptr) { // not showing the '>', put pointer back to avoid getting stuck ptr++; } } // end of printing from buffer content // In the cursor line and we may be concealing characters: correct // the cursor column when we reach its position. if (!did_wcol && draw_state == WL_LINE && wp == curwin && lnum == wp->w_cursor.lnum && conceal_cursor_line(wp) && (int)wp->w_virtcol <= vcol + n_skip) { if (wp->w_p_rl) { wp->w_wcol = grid->cols - col + boguscols - 1; } else { wp->w_wcol = col - boguscols; } wp->w_wrow = row; did_wcol = true; wp->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL; } // Don't override visual selection highlighting. if (n_attr > 0 && draw_state == WL_LINE && !search_attr_from_match) { char_attr = hl_combine_attr(char_attr, extra_attr); } // Handle the case where we are in column 0 but not on the first // character of the line and the user wants us to show us a // special character (via 'listchars' option "precedes:". if (lcs_prec_todo != NUL && wp->w_p_list && (wp->w_p_wrap ? (wp->w_skipcol > 0 && row == 0) : wp->w_leftcol > 0) && filler_todo <= 0 && draw_state > WL_STC && c != NUL) { c = wp->w_p_lcs_chars.prec; lcs_prec_todo = NUL; if (utf_char2cells(mb_c) > 1) { // Double-width character being overwritten by the "precedes" // character, need to fill up half the character. c_extra = MB_FILLER_CHAR; c_final = NUL; n_extra = 1; n_attr = 2; extra_attr = win_hl_attr(wp, HLF_AT); } mb_c = c; mb_utf8 = check_mb_utf8(&c, u8cc); saved_attr3 = char_attr; // save current attr char_attr = win_hl_attr(wp, HLF_AT); // overwriting char_attr n_attr3 = 1; } // At end of the text line or just after the last character. if (c == NUL && eol_hl_off == 0) { // flag to indicate whether prevcol equals startcol of search_hl or // one of the matches bool prevcol_hl_flag = get_prevcol_hl_flag(wp, &screen_search_hl, (long)(ptr - line) - 1); // NOLINT(google-readability-casting) // Invert at least one char, used for Visual and empty line or // highlight match at end of line. If it's beyond the last // char on the screen, just overwrite that one (tricky!) Not // needed when a '$' was displayed for 'list'. if (wp->w_p_lcs_chars.eol == lcs_eol_one && ((area_attr != 0 && vcol == fromcol && (VIsual_mode != Ctrl_V || lnum == VIsual.lnum || lnum == curwin->w_cursor.lnum)) // highlight 'hlsearch' match at end of line || prevcol_hl_flag)) { int n = 0; if (wp->w_p_rl) { if (col < 0) { n = 1; } } else { if (col >= grid->cols) { n = -1; } } if (n != 0) { // At the window boundary, highlight the last character // instead (better than nothing). off += n; col += n; } else { // Add a blank character to highlight. schar_from_ascii(linebuf_char[off], ' '); } if (area_attr == 0 && !has_fold) { // Use attributes from match with highest priority among // 'search_hl' and the match list. get_search_match_hl(wp, &screen_search_hl, (long)(ptr - line), // NOLINT(google-readability-casting) &char_attr); } int eol_attr = char_attr; if (cul_attr) { eol_attr = hl_combine_attr(cul_attr, eol_attr); } linebuf_attr[off] = eol_attr; if (wp->w_p_rl) { col--; off--; } else { col++; off++; } vcol++; eol_hl_off = 1; } // Highlight 'cursorcolumn' & 'colorcolumn' past end of the line. if (wp->w_p_wrap) { v = wp->w_skipcol; } else { v = wp->w_leftcol; } // check if line ends before left margin if (vcol < v + col - win_col_off(wp)) { vcol = v + col - win_col_off(wp); } // Get rid of the boguscols now, we want to draw until the right // edge for 'cursorcolumn'. col -= boguscols; // boguscols = 0; // Disabled because value never read after this if (draw_color_col) { draw_color_col = advance_color_col((int)VCOL_HLC, &color_cols); } bool has_virttext = false; // Make sure alignment is the same regardless // if listchars=eol:X is used or not. int eol_skip = (wp->w_p_lcs_chars.eol == lcs_eol_one && eol_hl_off == 0 ? 1 : 0); if (has_decor) { has_virttext = decor_redraw_eol(wp->w_buffer, &decor_state, &line_attr, col + eol_skip); } if (((wp->w_p_cuc && (int)wp->w_virtcol >= VCOL_HLC - eol_hl_off && (int)wp->w_virtcol < (long)grid->cols * (row - startrow + 1) + v && lnum != wp->w_cursor.lnum) || draw_color_col || line_attr_lowprio || line_attr || diff_hlf != (hlf_T)0 || has_virttext)) { int rightmost_vcol = 0; int i; if (wp->w_p_cuc) { rightmost_vcol = wp->w_virtcol; } if (draw_color_col) { // determine rightmost colorcolumn to possibly draw for (i = 0; color_cols[i] >= 0; i++) { if (rightmost_vcol < color_cols[i]) { rightmost_vcol = color_cols[i]; } } } int cuc_attr = win_hl_attr(wp, HLF_CUC); int mc_attr = win_hl_attr(wp, HLF_MC); int diff_attr = 0; if (diff_hlf == HLF_TXD) { diff_hlf = HLF_CHD; } if (diff_hlf != 0) { diff_attr = win_hl_attr(wp, (int)diff_hlf); } int base_attr = hl_combine_attr(line_attr_lowprio, diff_attr); if (base_attr || line_attr || has_virttext) { rightmost_vcol = INT_MAX; } int col_stride = wp->w_p_rl ? -1 : 1; while (wp->w_p_rl ? col >= 0 : col < grid->cols) { schar_from_ascii(linebuf_char[off], ' '); col += col_stride; if (draw_color_col) { draw_color_col = advance_color_col((int)VCOL_HLC, &color_cols); } int col_attr = base_attr; if (wp->w_p_cuc && VCOL_HLC == (long)wp->w_virtcol) { col_attr = cuc_attr; } else if (draw_color_col && VCOL_HLC == *color_cols) { col_attr = mc_attr; } col_attr = hl_combine_attr(col_attr, line_attr); linebuf_attr[off] = col_attr; off += col_stride; if (VCOL_HLC >= rightmost_vcol) { break; } vcol += 1; } } // TODO(bfredl): integrate with the common beyond-the-end-loop if (wp->w_buffer->terminal) { // terminal buffers may need to highlight beyond the end of the // logical line int n = wp->w_p_rl ? -1 : 1; while (col >= 0 && col < grid->cols) { schar_from_ascii(linebuf_char[off], ' '); linebuf_attr[off] = vcol >= TERM_ATTRS_MAX ? 0 : term_attrs[vcol]; off += n; vcol += n; col += n; } } draw_virt_text(wp, buf, win_col_offset, &col, grid->cols, row); grid_put_linebuf(grid, row, 0, col, grid->cols, wp->w_p_rl, wp, bg_attr, false); row++; // Update w_cline_height and w_cline_folded if the cursor line was // updated (saves a call to plines_win() later). if (wp == curwin && lnum == curwin->w_cursor.lnum) { curwin->w_cline_row = startrow; curwin->w_cline_height = row - startrow; curwin->w_cline_folded = foldinfo.fi_lines > 0; curwin->w_valid |= (VALID_CHEIGHT|VALID_CROW); conceal_cursor_used = conceal_cursor_line(curwin); } break; } // Show "extends" character from 'listchars' if beyond the line end and // 'list' is set. if (wp->w_p_lcs_chars.ext != NUL && draw_state == WL_LINE && wp->w_p_list && !wp->w_p_wrap && filler_todo <= 0 && (wp->w_p_rl ? col == 0 : col == grid->cols - 1) && !has_fold && (*ptr != NUL || lcs_eol_one > 0 || (n_extra && (c_extra != NUL || *p_extra != NUL)))) { c = wp->w_p_lcs_chars.ext; char_attr = win_hl_attr(wp, HLF_AT); mb_c = c; mb_utf8 = check_mb_utf8(&c, u8cc); } // advance to the next 'colorcolumn' if (draw_color_col) { draw_color_col = advance_color_col((int)VCOL_HLC, &color_cols); } // Highlight the cursor column if 'cursorcolumn' is set. But don't // highlight the cursor position itself. // Also highlight the 'colorcolumn' if it is different than // 'cursorcolumn' // Also highlight the 'colorcolumn' if 'breakindent' and/or 'showbreak' // options are set vcol_save_attr = -1; if ((draw_state == WL_LINE || draw_state == WL_BRI || draw_state == WL_SBR) && !lnum_in_visual_area && search_attr == 0 && area_attr == 0 && filler_todo <= 0) { if (wp->w_p_cuc && VCOL_HLC == (long)wp->w_virtcol && lnum != wp->w_cursor.lnum) { vcol_save_attr = char_attr; char_attr = hl_combine_attr(win_hl_attr(wp, HLF_CUC), char_attr); } else if (draw_color_col && VCOL_HLC == *color_cols) { vcol_save_attr = char_attr; char_attr = hl_combine_attr(win_hl_attr(wp, HLF_MC), char_attr); } } // Apply lowest-priority line attr now, so everything can override it. if (draw_state == WL_LINE) { char_attr = hl_combine_attr(line_attr_lowprio, char_attr); } // Store character to be displayed. // Skip characters that are left of the screen for 'nowrap'. vcol_prev = vcol; if (draw_state < WL_LINE || n_skip <= 0) { // // Store the character. // if (wp->w_p_rl && utf_char2cells(mb_c) > 1) { // A double-wide character is: put first half in left cell. off--; col--; } if (mb_utf8) { schar_from_cc(linebuf_char[off], mb_c, u8cc); } else { schar_from_ascii(linebuf_char[off], (char)c); } if (multi_attr) { linebuf_attr[off] = multi_attr; multi_attr = 0; } else { linebuf_attr[off] = char_attr; } if (utf_char2cells(mb_c) > 1) { // Need to fill two screen columns. off++; col++; // UTF-8: Put a 0 in the second screen char. linebuf_char[off][0] = 0; if (draw_state > WL_STC && filler_todo <= 0) { vcol++; } // When "tocol" is halfway through a character, set it to the end of // the character, otherwise highlighting won't stop. if (tocol == vcol) { tocol++; } if (wp->w_p_rl) { // now it's time to backup one cell off--; col--; } } if (wp->w_p_rl) { off--; col--; } else { off++; col++; } } else if (wp->w_p_cole > 0 && is_concealing) { n_skip--; vcol_off++; if (n_extra > 0) { vcol_off += n_extra; } if (wp->w_p_wrap) { // Special voodoo required if 'wrap' is on. // // Advance the column indicator to force the line // drawing to wrap early. This will make the line // take up the same screen space when parts are concealed, // so that cursor line computations aren't messed up. // // To avoid the fictitious advance of 'col' causing // trailing junk to be written out of the screen line // we are building, 'boguscols' keeps track of the number // of bad columns we have advanced. if (n_extra > 0) { vcol += n_extra; if (wp->w_p_rl) { col -= n_extra; boguscols -= n_extra; } else { col += n_extra; boguscols += n_extra; } n_extra = 0; n_attr = 0; } if (utf_char2cells(mb_c) > 1) { // Need to fill two screen columns. if (wp->w_p_rl) { boguscols--; col--; } else { boguscols++; col++; } } if (wp->w_p_rl) { boguscols--; col--; } else { boguscols++; col++; } } else { if (n_extra > 0) { vcol += n_extra; n_extra = 0; n_attr = 0; } } } else { n_skip--; } // Only advance the "vcol" when after the 'number' or 'relativenumber' // column. if (draw_state > WL_STC && filler_todo <= 0) { vcol++; } if (vcol_save_attr >= 0) { char_attr = vcol_save_attr; } // restore attributes after "predeces" in 'listchars' if (draw_state > WL_STC && n_attr3 > 0 && --n_attr3 == 0) { char_attr = saved_attr3; } // restore attributes after last 'listchars' or 'number' char if (n_attr > 0 && draw_state == WL_LINE && --n_attr == 0) { char_attr = saved_attr2; } // At end of screen line and there is more to come: Display the line // so far. If there is no more to display it is caught above. if ((wp->w_p_rl ? (col < 0) : (col >= grid->cols)) && (!has_fold || virt_line_offset >= 0) && (draw_state != WL_LINE || *ptr != NUL || filler_todo > 0 || (wp->w_p_list && wp->w_p_lcs_chars.eol != NUL && p_extra != at_end_str) || (n_extra != 0 && (c_extra != NUL || *p_extra != NUL)))) { bool wrap = wp->w_p_wrap // Wrapping enabled. && filler_todo <= 0 // Not drawing diff filler lines. && lcs_eol_one != -1 // Haven't printed the lcs_eol character. && row != endrow - 1 // Not the last line being displayed. && (grid->cols == Columns // Window spans the width of the screen, || ui_has(kUIMultigrid)) // or has dedicated grid. && !wp->w_p_rl; // Not right-to-left. int draw_col = col - boguscols; if (virt_line_offset >= 0) { draw_virt_text_item(buf, virt_line_offset, kv_A(virt_lines, virt_line_index).line, kHlModeReplace, grid->cols, 0); } else { draw_virt_text(wp, buf, win_col_offset, &draw_col, grid->cols, row); } grid_put_linebuf(grid, row, 0, draw_col, grid->cols, wp->w_p_rl, wp, bg_attr, wrap); if (wrap) { ScreenGrid *current_grid = grid; int current_row = row, dummy_col = 0; // dummy_col unused grid_adjust(¤t_grid, ¤t_row, &dummy_col); // Force a redraw of the first column of the next line. current_grid->attrs[current_grid->line_offset[current_row + 1]] = -1; // Remember that the line wraps, used for modeless copy. current_grid->line_wraps[current_row] = true; } boguscols = 0; row++; // When not wrapping and finished diff lines, or when displayed // '$' and highlighting until last column, break here. if ((!wp->w_p_wrap && filler_todo <= 0) || lcs_eol_one == -1) { break; } // When the window is too narrow draw all "@" lines. if (draw_state != WL_LINE && filler_todo <= 0) { win_draw_end(wp, '@', ' ', true, row, wp->w_grid.rows, HLF_AT); set_empty_rows(wp, row); row = endrow; } // When line got too long for screen break here. if (row == endrow) { row++; break; } col = 0; off = 0; if (wp->w_p_rl) { col = grid->cols - 1; // col is not used if breaking! off += col; } // reset the drawing state for the start of a wrapped line draw_state = WL_START; saved_n_extra = n_extra; saved_p_extra = p_extra; saved_c_extra = c_extra; saved_c_final = c_final; saved_char_attr = char_attr; n_extra = 0; lcs_prec_todo = wp->w_p_lcs_chars.prec; if (filler_todo <= 0) { need_showbreak = true; } if (statuscol.draw) { if (row == startrow + filler_lines + 1 || row == startrow + filler_lines) { // Re-evaluate 'statuscolumn' for the first wrapped row and non filler line statuscol.textp = NULL; } else if (statuscol.textp) { // Draw the already built 'statuscolumn' on the next wrapped or filler line statuscol.textp = statuscol.text; statuscol.hlrecp = statuscol.hlrec; } // Fall back to default columns if the 'n' flag isn't in 'cpo' statuscol.draw = vim_strchr(p_cpo, CPO_NUMCOL) == NULL; } filler_todo--; virt_line_offset = -1; // When the filler lines are actually below the last line of the // file, don't draw the line itself, break here. if (filler_todo == 0 && (wp->w_botfill || end_fill)) { break; } } } // for every character in the line // After an empty line check first word for capital. if (*skipwhite(line) == NUL) { capcol_lnum = lnum + 1; cap_col = 0; } kv_destroy(virt_lines); xfree(p_extra_free); return row; }